81224780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3433}}^1$

素因数の和:3475

約数の個数: 72

約数和(自身を含む): 211149792

約数和(自身を除く): 129925012

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 1183, 1690, 1820, 2366, 3380, 3433, 4732, 5915, 6866, 11830, 13732, 17165, 23660, 24031, 34330, 44629, 48062, 68660, 89258, 96124, 120155, 178516, 223145, 240310, 312403, 446290, 480620, 580177, 624806, 892580, 1160354, 1249612, 1562015, 2320708, 2900885, 3124030, 4061239, 5801770, 6248060, 8122478, 11603540, 16244956, 20306195, 40612390, 81224780]

約数ペア:

[(1, 81224780), (2, 40612390), (4, 20306195), (5, 16244956), (7, 11603540), (10, 8122478), (13, 6248060), (14, 5801770), (20, 4061239), (26, 3124030), (28, 2900885), (35, 2320708), (52, 1562015), (65, 1249612), (70, 1160354), (91, 892580), (130, 624806), (140, 580177), (169, 480620), (182, 446290), (260, 312403), (338, 240310), (364, 223145), (455, 178516), (676, 120155), (845, 96124), (910, 89258), (1183, 68660), (1690, 48062), (1820, 44629), (2366, 34330), (3380, 24031), (3433, 23660), (4732, 17165), (5915, 13732), (6866, 11830)]